Ostar 400
Product description
Ostar 400 is a kind of calcined kaolin powder treated by special process. Its impurity content is very low. It has unique high specific surface area and multi pore flake structure. Its chemical composition is anhydrous aluminum silicate. Used in automobile electrophoresis primer, has the advantages of low conductivity and high grinding efficiency, good dispersibility, suspension of good chemical stability, can keep the sedimentation stability and storage stability of electrophoretic coatings, prolong electrocoats service life, improve the salt fog resistance of the coatings film, improve the smoothness, compactness and uniformity of. The product has developed voids, has good thermal insulation ability, can be applied and thermal paper field. CAS number 92704-41-1.
Product index
| project | Company | Index range | Test standard |
| Whiteness | R457，% | 87.5±2.5 | GB/T 5950-2008 |
| granularity | -2μm，% | 88±2 | BT-1500 |
| Oil absorption | g/100g | 75±5 | GB/T 14563-2008 |
| Sieve residue | 325mesh% | ≤0.003 | GB/T 14563-2008 |
| conductivity | μs/cm | ≤35 | FE38-Standard |
| fineness of grind | μm | ≤15 | GB/T 21867.2-2008 |
| PH | 6.0-7.5 | GB/T 14563-2008 | |
| Water content | % | ≤0.8 | GB/T 14563-2008 |
| bulk density | Kg/L | 0.35-0.55 | GB/T 16913.3-1997 |
| True density | g/cm³ | 2.65-2.75 | GB/T 5071-1997 |
